Mechanical Analysis for Asphalt Surface in Transverse Contraction Joint of Porous Concrete Base

Abstract:

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In the field of asphalt pavement, the study has shown that porous concrete base has a good performance of drainage capacity. When porous concrete is used in asphalt pavement, problem of water damage for asphalt pavement can be settled effectively. Because of that, more and more porous concrete base have been applied to asphalt pavement construction in recent years. As a matter of fact, it is necessary to do mechanical analysis for asphalt surface, which is located in the middle of porous concrete base’s transverse contraction joint, in order to put forward theoretical basis for asphalt surface design. In the paper, three–dimension finite element model of asphalt pavement, which includes transverse contraction joint of porous concrete base and asphalt surface, is created for the aim of doing mechanical analysis of asphalt surface which is located in transverse contraction joint of porous concrete base. Based on numerical method, finite element software, such as ANSYS, is employed to do mechanical analysis for asphalt surface which is located in transverse contraction joint of porous concrete base of asphalt pavement. Mechanical analysis show that load stress is compressive stress, and maximum shearing stress, which is caused by load, is evident in asphalt surface which is located in transverse contraction joint of porous concrete base of asphalt pavement. Maximum shearing stress decrease, decrease, decrease and increase respectively with increase of the surface’s modulus, the surface’s thickness, base’s thickness and ratio of base’s modulus to foundation’s modulus. Meanwhile, maximum shearing stress, which is caused by thermal stress, increase and decrease respectively with increase of surface’s modulus and ratio of base’s modulus to foundation’s modulus.

Info:

Periodical:

Advanced Materials Research (Volumes 443-444)

Edited by:

Li Jian

Pages:

757-762

DOI:

10.4028/www.scientific.net/AMR.443-444.757

Citation:

L. J. Suo and X. G. Hu, "Mechanical Analysis for Asphalt Surface in Transverse Contraction Joint of Porous Concrete Base", Advanced Materials Research, Vols. 443-444, pp. 757-762, 2012

Online since:

January 2012

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Price:

$35.00

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